Portable adjustable sanding device



Sept. 22, 1959 P. RAIA PORTABLE ADJUSTABLE SANDING DEVICE Filed Nov. 6,1958 United States Patent 2,904,939 PORTABLE ADJUSTABLE SANDING DEVICEPeter Raia, Elmhurst, Ill. Application November 6, 1958, Serial No.772,362 4 Claims. c1. 51-187) My invention is directed to portablesanding devices adapted to hold a plurality of superposed sheets ofabrasive paper or abrasive cloth.

It is an important object of my invention to provide a novel portablehand sander which has novel structural features providing for quick,easy and correct mounting and retention of a plurality of abrasivesheets, said sheets being easily individually and successively removableas the same are worn away topre sent for use the adjacent abrasivesheet.

A further object of my invention is the provision of a portable handsanding device having a pair of blocks pivotally or hingedly connectedtogether by a flexible pad or strip secured on their bottom faces, andhaving end opening recesses for receiving, and removably engaging theend portions of a plurality of flexible abrasive sheets, said blocksbeing pivotal to angular positions relative to each other to facilitatethe insertion of the end portions of a plurality of abrasive sheets, themovement of said blocks to end abutting aligned position being adaptedto stretch tightly the intermediate portions of said abrasive sheets;and said devices having releasable hook means for holding said blocks inend abutting and aligned positions.

A further object of my invention is the provision of a portable sandingdevice as recited in the preceding paragraph and wherein the abrasivesheets may be singly and successively torn away and removed as the sameare used up, without affecting the mounted position of abrasive sheetsbeneath the sheet being removed.

Other and further important objects of my invention will be apparentfrom the following description and appended claims.

Fig. 1 is a prospective view of my novel sanding device embodying thenovel features of my invention.

Fig. 2 is a side elevation showing my device with the blocks in angularposition relative to each other and illustrating the manner of loadingabrasive sheets therein.

Fig. 3 is an end view thereof, with parts broken away and with the hookremoved and elevated.

As shown on the drawings: Numerals and 11 designate a pair ofsubstantially rectangular blocks which may be of wood, plastic or othersuitable material. Each of said blocks have their opposite side facesrecessed to form concave faces 12 and 13 respectively to facilitategripping and holding of the device during use and to prevent slippagethereof from the hands. Each of said blocks has an outer end face 14,and a relatively deep slot or recess 15 is formed transversely to openupon the end faces 14 respectively, as indicated in Figs. 1 and 2.

The inner or normally abutting end faces of said blocks designated as 16are substantially flat as illustrated in Fig. 2, and a pair of holes orrecesses 17 are formed in spaced apart positions in the block 10 to openon said inner face. The other block 11 has a pair of metal pegs orpoints 18 mounted therein in positions to seat in the two holes 17respectively when the blocks are in adjacent or abutting positions, intointer-engagement of said points and said blocks aids in maintaining thetwo blocks in proper position relative to each other during use.

. Numeral 20 designates a flexible preferably resilient pad of yieldablematerial Which is of substantially rectangular shape and which issecured by a coating of cement or adhesive 19 to the frame between facesof blocks 10 and 11, said securance being with said blocks in end to endcontacting positions. 1 found rubber or rubberlike compositions to behighly satisfactory for the pad 20 as the same provides a proper cushionfor the sheets of abrasive paper here and after described. It will benoted that said flexible pad 20 pivotedly or hingedly connects saidblocks relative to each other so that the same may be pivoted todifferent positions such as illustrated in Fig. 2, for the purpose ofeither loading or inserting the abrasive sheets or for removal of suchsheets.

Numeral 21 designates a plurality of sand paper 'or of thin abrasivesheets which are preferably of rectangular form and of substantiallyequal sizes, and of a length so that the same will transverse the entireface of the pad and the opposite ends thereof will be bent over andseated in the oppositely opening recesses or slots 15. An importantadvantage of providing pivotal or hinged-like means for connecting thetwo blocks 10 and 11 in the manner described is that a substantialnumber of said abrasive sheets in super-posed adjacent position may bemanually, quickly and easily inserted first in one of said recesses 15and then the opposite adjacent ends of said sheets are inserted in theopposite recesses 15 while the said blocks 10 and 11 are in angularposition relative to each other, for example as illustrated in Fig. 2.When both ends of the group of super-posed abrasive sheets 21 areinserted in their respective slots or recesses 15 the two blocks aremoved and pivoted into aligned end to end positions as illustrated inFig. 1, which movement causes the sheets of abrasive material to bedrawn relatively tight and in flat relationship with respect to the pad20.

Each of said blocks has a hole or recess 22 formed therein and openingon its upper face, as illustrated in Fig. l. A metal bail-like hookhaving angularly bent ends and of the proper length is adapted to beremovably inserted in the respective holes 22 to thereby connect andhold the two blocks in aligned end to end positions and thereby preventany pivoting movement thereof during normal use.

Numerals 24 designates a pair of relatively shallow and large recessesformed in the upper portion of said blocks 10 and 11 respectively whichprovide for partial insertion of the users fingers below the hook 23 tofacilitate removal of the hook 23 whenever desired.

My novel portable sanding device is a great labor and time saver and oneof its several advantages is in the quick and easy loading and correctmounting of sheets of abrasive paper in the described manner, and whichare adapted to be easily removed one at a time as the same are worn,without disturbing the ready-to-use positions of the remaining abrasivesheets which are held in relatively tight mounted position adjacent theyieldable pad.

While the foregoing specification sets forth the invention in specificterms, it is to be understood that numerous changes in the shape, sizeand materials may be resorted to without departing from the spirit andscope of the invention as claimed hereinafter and it is contemplatedthat various changes may be made in the embodiment of the inventionherein specifically described without departing from or sacrificing anyof the advantages of the invention or any features thereof, and nothingherein shall be construed as limitations upon the invention, its conceptor structural embodiment as to the Whole 1. In a portable hand sandingdevice, a pair of substantially rectangular blocks having flat bottomfaces; each of said blocks having a transversely extending end openingrecess; a flexible pad secured on the bottom faces of said blocks andpivotally connecting said blocks together; said blocks having upwardlyopening recesses; and a double hook having its end portions releasablyengaging said upper openings of said blocks in end-to-end alignedposition, said end opening recesses being adapted to engage and. holdthe end portions of a plurality of abrasive sheets.

2. In a portable hand sanding device, a pair of blocks having fiatbottom faces and having end opening recesses thereon; a flexibleyieldable member secured on the bottom faces of said blocks and.normally holding said blocks connected together, said blocks beingpivotable with respect' to each other; said end recesses of said blocksbeing adapted to engage the opposite end portions respectively of aplurality of abrasive sheets; and releasable hook means engaging theupper openings of said blocks and adapted to releasably hold said blocksin end-to-end aligned positions.

3. In a portable sanding device for holding a plurality to hold saidblocksv of removable abrasive sheets; a pair of substantiallyrectangular blocks having flat bottom faces and having abutting endfaces and having transversely extending end opening recesses in one endof each thereof; said blocks having upwardly opening apertures therein;a flexible strip of yieldable material secured on the bottom faces ofsaid blocks; and a double hook releasably engaging the I upwardlyopening holes in said blocks to normally hold the same in alignedposition, said transverse end opening recesses being adapted to hold aplurality of superposed abrasive sheets with the intermediate portionsof said sheets adjacent said strip of material.

4. A portable sanding device substantially as recited in claim 3 andwherein oneof said blocks has a plurality of depressions opening in theend thereof normally abutting the other block, and wherein said secondblock has a plurality of projecting pins on its abutting end adapted toseat in said depressions when said blocks are in end to end positions.

References Cited in the file of this patent UNITED STATES PATENTS428,585 Fanning May 20; 1890 687,083 Tolman Nov. 19, 1901 1,277,601Katzke Sept. 3', 1918

